./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37d0ed05d77a0379c9ed98058bf2f327252773ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:19,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:19,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:19,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:19,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:19,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:19,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:19,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:19,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:19,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:19,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:19,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:19,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:19,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:19,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:19,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:19,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:19,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:19,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:19,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:19,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:19,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:19,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:19,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:19,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:19,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:19,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:19,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:19,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:19,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:19,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:19,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:19,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:19,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:19,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:19,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:19,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:19,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:19,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:19,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:19,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:19,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:19,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:19,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:19,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:19,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:19,780 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:19,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:19,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:19,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:19,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:19,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:19,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:19,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:19,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:19,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:19,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:19,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:19,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:19,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:19,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:19,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:19,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:19,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:19,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:19,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:19,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:19,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:19,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:19,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:19,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:19,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-11-28 03:13:20,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:20,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:20,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:20,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:20,156 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:20,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_8.c [2020-11-28 03:13:20,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/data/cbec305f9/a9e4eda655f441ec8381cac307c04ef1/FLAG49aec9b7d [2020-11-28 03:13:20,753 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:20,765 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/sv-benchmarks/c/locks/test_locks_8.c [2020-11-28 03:13:20,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/data/cbec305f9/a9e4eda655f441ec8381cac307c04ef1/FLAG49aec9b7d [2020-11-28 03:13:21,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/data/cbec305f9/a9e4eda655f441ec8381cac307c04ef1 [2020-11-28 03:13:21,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:21,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:21,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:21,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:21,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:21,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741eca80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21, skipping insertion in model container [2020-11-28 03:13:21,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:21,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:21,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:21,366 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:21,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:21,426 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:21,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21 WrapperNode [2020-11-28 03:13:21,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:21,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:21,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:21,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:21,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:21,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:21,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:21,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:21,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:21,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:21,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:21,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:21,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:21,953 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:21,953 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:13:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:21 BoogieIcfgContainer [2020-11-28 03:13:21,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:21,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:21,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:21,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:21,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:21" (1/3) ... [2020-11-28 03:13:21,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26841eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:21, skipping insertion in model container [2020-11-28 03:13:21,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21" (2/3) ... [2020-11-28 03:13:21,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26841eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:21, skipping insertion in model container [2020-11-28 03:13:21,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:21" (3/3) ... [2020-11-28 03:13:21,963 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-11-28 03:13:21,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:21,977 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:21,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:22,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:22,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:22,037 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:22,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:22,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:22,048 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:22,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:22,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-28 03:13:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:13:22,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:22,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2020-11-28 03:13:22,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603951554] [2020-11-28 03:13:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:22,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603951554] [2020-11-28 03:13:22,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:22,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824840367] [2020-11-28 03:13:22,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:22,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:22,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:22,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,394 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-11-28 03:13:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,473 INFO L93 Difference]: Finished difference Result 72 states and 122 transitions. [2020-11-28 03:13:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:13:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,486 INFO L225 Difference]: With dead ends: 72 [2020-11-28 03:13:22,486 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:13:22,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:13:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-11-28 03:13:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:13:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2020-11-28 03:13:22,531 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2020-11-28 03:13:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:22,532 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2020-11-28 03:13:22,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2020-11-28 03:13:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:13:22,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:22,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:22,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2020-11-28 03:13:22,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962570870] [2020-11-28 03:13:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:22,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962570870] [2020-11-28 03:13:22,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:22,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:22,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063625425] [2020-11-28 03:13:22,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:22,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:22,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,599 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2020-11-28 03:13:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,635 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-11-28 03:13:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:13:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,638 INFO L225 Difference]: With dead ends: 94 [2020-11-28 03:13:22,638 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:13:22,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:13:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-11-28 03:13:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:13:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-11-28 03:13:22,649 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2020-11-28 03:13:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:22,649 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-11-28 03:13:22,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-11-28 03:13:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:13:22,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:22,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:22,652 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2020-11-28 03:13:22,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465933441] [2020-11-28 03:13:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:22,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465933441] [2020-11-28 03:13:22,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:22,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:22,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269866878] [2020-11-28 03:13:22,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:22,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:22,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:22,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,734 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2020-11-28 03:13:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,762 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-11-28 03:13:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 03:13:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,764 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:13:22,764 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:13:22,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:13:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-28 03:13:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:13:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2020-11-28 03:13:22,775 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2020-11-28 03:13:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:22,775 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2020-11-28 03:13:22,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2020-11-28 03:13:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:13:22,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:22,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:13:22,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2020-11-28 03:13:22,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611386541] [2020-11-28 03:13:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:22,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611386541] [2020-11-28 03:13:22,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:22,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:22,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124082030] [2020-11-28 03:13:22,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:22,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:22,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:22,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,830 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2020-11-28 03:13:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,855 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2020-11-28 03:13:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 03:13:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,858 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:13:22,858 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 03:13:22,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 03:13:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-11-28 03:13:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:13:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-11-28 03:13:22,868 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-11-28 03:13:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:22,868 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-11-28 03:13:22,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-11-28 03:13:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:13:22,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:22,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:13:22,870 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2020-11-28 03:13:22,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471487286] [2020-11-28 03:13:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471487286] [2020-11-28 03:13:22,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:22,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:22,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137445320] [2020-11-28 03:13:22,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:22,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:22,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,951 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2020-11-28 03:13:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,990 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2020-11-28 03:13:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 03:13:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,992 INFO L225 Difference]: With dead ends: 181 [2020-11-28 03:13:22,992 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:13:22,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:22,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:13:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-11-28 03:13:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 03:13:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2020-11-28 03:13:23,006 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2020-11-28 03:13:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,007 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2020-11-28 03:13:23,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2020-11-28 03:13:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:23,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:13:23,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2020-11-28 03:13:23,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318913550] [2020-11-28 03:13:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318913550] [2020-11-28 03:13:23,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114118256] [2020-11-28 03:13:23,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,043 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2020-11-28 03:13:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,063 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2020-11-28 03:13:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:13:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,064 INFO L225 Difference]: With dead ends: 162 [2020-11-28 03:13:23,065 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 03:13:23,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 03:13:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-11-28 03:13:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:13:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2020-11-28 03:13:23,075 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2020-11-28 03:13:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,076 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2020-11-28 03:13:23,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2020-11-28 03:13:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:23,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:13:23,077 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2020-11-28 03:13:23,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718927743] [2020-11-28 03:13:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718927743] [2020-11-28 03:13:23,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109138763] [2020-11-28 03:13:23,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,109 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2020-11-28 03:13:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,148 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2020-11-28 03:13:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:13:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,150 INFO L225 Difference]: With dead ends: 309 [2020-11-28 03:13:23,150 INFO L226 Difference]: Without dead ends: 207 [2020-11-28 03:13:23,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-28 03:13:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-11-28 03:13:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-28 03:13:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2020-11-28 03:13:23,167 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2020-11-28 03:13:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,167 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2020-11-28 03:13:23,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2020-11-28 03:13:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:13:23,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2020-11-28 03:13:23,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774808474] [2020-11-28 03:13:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774808474] [2020-11-28 03:13:23,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476417418] [2020-11-28 03:13:23,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,204 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2020-11-28 03:13:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,249 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2020-11-28 03:13:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:13:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,251 INFO L225 Difference]: With dead ends: 257 [2020-11-28 03:13:23,251 INFO L226 Difference]: Without dead ends: 255 [2020-11-28 03:13:23,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-28 03:13:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-11-28 03:13:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-28 03:13:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2020-11-28 03:13:23,262 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2020-11-28 03:13:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,263 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2020-11-28 03:13:23,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2020-11-28 03:13:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:13:23,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:13:23,265 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2020-11-28 03:13:23,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471023667] [2020-11-28 03:13:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471023667] [2020-11-28 03:13:23,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961411775] [2020-11-28 03:13:23,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,323 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2020-11-28 03:13:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,349 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2020-11-28 03:13:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 03:13:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,354 INFO L225 Difference]: With dead ends: 373 [2020-11-28 03:13:23,354 INFO L226 Difference]: Without dead ends: 371 [2020-11-28 03:13:23,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-11-28 03:13:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2020-11-28 03:13:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-11-28 03:13:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2020-11-28 03:13:23,375 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2020-11-28 03:13:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,376 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2020-11-28 03:13:23,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2020-11-28 03:13:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:13:23,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:13:23,382 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2020-11-28 03:13:23,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935661687] [2020-11-28 03:13:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935661687] [2020-11-28 03:13:23,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364343452] [2020-11-28 03:13:23,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,439 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2020-11-28 03:13:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,468 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2020-11-28 03:13:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 03:13:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,476 INFO L225 Difference]: With dead ends: 677 [2020-11-28 03:13:23,476 INFO L226 Difference]: Without dead ends: 395 [2020-11-28 03:13:23,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-11-28 03:13:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-11-28 03:13:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-28 03:13:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2020-11-28 03:13:23,502 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2020-11-28 03:13:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,503 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2020-11-28 03:13:23,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2020-11-28 03:13:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:13:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:13:23,505 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2020-11-28 03:13:23,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792282991] [2020-11-28 03:13:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792282991] [2020-11-28 03:13:23,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11950883] [2020-11-28 03:13:23,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,547 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2020-11-28 03:13:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,612 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2020-11-28 03:13:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 03:13:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,616 INFO L225 Difference]: With dead ends: 597 [2020-11-28 03:13:23,616 INFO L226 Difference]: Without dead ends: 407 [2020-11-28 03:13:23,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-11-28 03:13:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-11-28 03:13:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-11-28 03:13:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2020-11-28 03:13:23,632 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2020-11-28 03:13:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,633 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2020-11-28 03:13:23,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2020-11-28 03:13:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:13:23,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:13:23,635 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2020-11-28 03:13:23,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812698211] [2020-11-28 03:13:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812698211] [2020-11-28 03:13:23,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871730111] [2020-11-28 03:13:23,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,678 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2020-11-28 03:13:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,699 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2020-11-28 03:13:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 03:13:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,704 INFO L225 Difference]: With dead ends: 713 [2020-11-28 03:13:23,704 INFO L226 Difference]: Without dead ends: 711 [2020-11-28 03:13:23,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-11-28 03:13:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2020-11-28 03:13:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-11-28 03:13:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2020-11-28 03:13:23,724 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2020-11-28 03:13:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,724 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2020-11-28 03:13:23,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2020-11-28 03:13:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:13:23,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:13:23,727 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2020-11-28 03:13:23,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740375090] [2020-11-28 03:13:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740375090] [2020-11-28 03:13:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860511092] [2020-11-28 03:13:23,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,759 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2020-11-28 03:13:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,785 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2020-11-28 03:13:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 03:13:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,790 INFO L225 Difference]: With dead ends: 1337 [2020-11-28 03:13:23,790 INFO L226 Difference]: Without dead ends: 775 [2020-11-28 03:13:23,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-11-28 03:13:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2020-11-28 03:13:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-11-28 03:13:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2020-11-28 03:13:23,815 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2020-11-28 03:13:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,816 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2020-11-28 03:13:23,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2020-11-28 03:13:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:13:23,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:13:23,818 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2020-11-28 03:13:23,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476515618] [2020-11-28 03:13:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476515618] [2020-11-28 03:13:23,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369558399] [2020-11-28 03:13:23,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,839 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2020-11-28 03:13:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,868 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2020-11-28 03:13:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 03:13:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,873 INFO L225 Difference]: With dead ends: 1161 [2020-11-28 03:13:23,873 INFO L226 Difference]: Without dead ends: 791 [2020-11-28 03:13:23,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-11-28 03:13:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-11-28 03:13:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-11-28 03:13:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2020-11-28 03:13:23,902 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2020-11-28 03:13:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,902 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2020-11-28 03:13:23,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2020-11-28 03:13:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:13:23,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:23,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:23,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:13:23,906 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2020-11-28 03:13:23,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:23,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892737352] [2020-11-28 03:13:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892737352] [2020-11-28 03:13:23,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:23,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:23,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470739626] [2020-11-28 03:13:23,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:23,959 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2020-11-28 03:13:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,013 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2020-11-28 03:13:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 03:13:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,021 INFO L225 Difference]: With dead ends: 1353 [2020-11-28 03:13:24,021 INFO L226 Difference]: Without dead ends: 1351 [2020-11-28 03:13:24,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-11-28 03:13:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2020-11-28 03:13:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-11-28 03:13:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2020-11-28 03:13:24,065 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2020-11-28 03:13:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:24,065 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2020-11-28 03:13:24,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2020-11-28 03:13:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:13:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:24,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:24,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:13:24,069 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2020-11-28 03:13:24,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390257446] [2020-11-28 03:13:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:24,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390257446] [2020-11-28 03:13:24,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:24,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:24,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323731584] [2020-11-28 03:13:24,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:24,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,101 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2020-11-28 03:13:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,153 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2020-11-28 03:13:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 03:13:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,163 INFO L225 Difference]: With dead ends: 2633 [2020-11-28 03:13:24,163 INFO L226 Difference]: Without dead ends: 1511 [2020-11-28 03:13:24,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-11-28 03:13:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-11-28 03:13:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-11-28 03:13:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2020-11-28 03:13:24,215 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2020-11-28 03:13:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:24,217 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2020-11-28 03:13:24,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2020-11-28 03:13:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:13:24,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:24,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:24,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:13:24,220 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2020-11-28 03:13:24,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616335138] [2020-11-28 03:13:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:24,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616335138] [2020-11-28 03:13:24,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:24,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:24,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941337282] [2020-11-28 03:13:24,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:24,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:24,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:24,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,249 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2020-11-28 03:13:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,294 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2020-11-28 03:13:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 03:13:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,303 INFO L225 Difference]: With dead ends: 2265 [2020-11-28 03:13:24,303 INFO L226 Difference]: Without dead ends: 1543 [2020-11-28 03:13:24,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-11-28 03:13:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-11-28 03:13:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-11-28 03:13:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2020-11-28 03:13:24,362 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2020-11-28 03:13:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:24,363 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2020-11-28 03:13:24,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2020-11-28 03:13:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:13:24,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:24,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:24,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:13:24,366 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2020-11-28 03:13:24,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774417772] [2020-11-28 03:13:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:24,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774417772] [2020-11-28 03:13:24,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:24,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:24,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121612682] [2020-11-28 03:13:24,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:24,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,408 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2020-11-28 03:13:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,477 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2020-11-28 03:13:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 03:13:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,492 INFO L225 Difference]: With dead ends: 2569 [2020-11-28 03:13:24,492 INFO L226 Difference]: Without dead ends: 2567 [2020-11-28 03:13:24,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-11-28 03:13:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2020-11-28 03:13:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-11-28 03:13:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2020-11-28 03:13:24,570 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2020-11-28 03:13:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:24,570 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2020-11-28 03:13:24,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2020-11-28 03:13:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:13:24,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:24,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:24,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:13:24,574 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2020-11-28 03:13:24,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494814900] [2020-11-28 03:13:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:24,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494814900] [2020-11-28 03:13:24,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:24,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:24,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180613923] [2020-11-28 03:13:24,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:24,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:24,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:24,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,608 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2020-11-28 03:13:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,682 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2020-11-28 03:13:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 03:13:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,697 INFO L225 Difference]: With dead ends: 5193 [2020-11-28 03:13:24,697 INFO L226 Difference]: Without dead ends: 2951 [2020-11-28 03:13:24,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-11-28 03:13:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2020-11-28 03:13:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-11-28 03:13:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2020-11-28 03:13:24,816 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2020-11-28 03:13:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:24,816 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2020-11-28 03:13:24,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2020-11-28 03:13:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:13:24,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:24,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:24,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 03:13:24,822 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2020-11-28 03:13:24,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356366668] [2020-11-28 03:13:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:24,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356366668] [2020-11-28 03:13:24,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:24,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:24,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708743354] [2020-11-28 03:13:24,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:24,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:24,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,850 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2020-11-28 03:13:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:24,909 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2020-11-28 03:13:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:24,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:13:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:24,924 INFO L225 Difference]: With dead ends: 4425 [2020-11-28 03:13:24,925 INFO L226 Difference]: Without dead ends: 3015 [2020-11-28 03:13:24,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-11-28 03:13:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2020-11-28 03:13:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-11-28 03:13:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2020-11-28 03:13:25,026 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2020-11-28 03:13:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:25,027 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2020-11-28 03:13:25,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2020-11-28 03:13:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:13:25,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:25,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:25,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:13:25,033 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2020-11-28 03:13:25,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:25,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907391039] [2020-11-28 03:13:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:25,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907391039] [2020-11-28 03:13:25,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:25,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:25,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177431547] [2020-11-28 03:13:25,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:25,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:25,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:25,058 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2020-11-28 03:13:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:25,165 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2020-11-28 03:13:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:25,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:13:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:25,188 INFO L225 Difference]: With dead ends: 4871 [2020-11-28 03:13:25,188 INFO L226 Difference]: Without dead ends: 4869 [2020-11-28 03:13:25,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-11-28 03:13:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2020-11-28 03:13:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-11-28 03:13:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2020-11-28 03:13:25,329 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2020-11-28 03:13:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:25,329 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2020-11-28 03:13:25,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2020-11-28 03:13:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:13:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:25,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:25,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 03:13:25,339 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2020-11-28 03:13:25,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:25,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331501840] [2020-11-28 03:13:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:25,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331501840] [2020-11-28 03:13:25,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:25,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:25,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137453513] [2020-11-28 03:13:25,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:25,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:25,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:25,365 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2020-11-28 03:13:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:25,542 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2020-11-28 03:13:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:25,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:13:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:25,543 INFO L225 Difference]: With dead ends: 10245 [2020-11-28 03:13:25,543 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:25,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:25,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-28 03:13:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:25,555 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:25,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:25,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:25,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:13:25,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:13:25,575 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-11-28 03:13:25,575 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-11-28 03:13:25,575 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,575 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L277 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-11-28 03:13:25,576 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,577 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,578 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 03:13:25,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:25 BoogieIcfgContainer [2020-11-28 03:13:25,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:25,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:25,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:25,591 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:25,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:21" (3/4) ... [2020-11-28 03:13:25,594 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:13:25,608 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:13:25,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:13:25,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:25,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:25,680 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99825c2e-94e9-41dd-b077-8daf4657bef8/bin/uautomizer/witness.graphml [2020-11-28 03:13:25,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:25,682 INFO L168 Benchmark]: Toolchain (without parser) took 4579.99 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 65.4 MB in the beginning and 111.3 MB in the end (delta: -45.8 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,683 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:25,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.53 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 70.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 68.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,684 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:25,684 INFO L168 Benchmark]: RCFGBuilder took 454.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 50.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,685 INFO L168 Benchmark]: TraceAbstraction took 3633.76 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 49.9 MB in the beginning and 115.4 MB in the end (delta: -65.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,685 INFO L168 Benchmark]: Witness Printer took 89.99 ms. Allocated memory is still 180.4 MB. Free memory was 115.4 MB in the beginning and 111.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:25,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.53 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 70.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 68.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 454.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 50.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3633.76 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 49.9 MB in the beginning and 115.4 MB in the end (delta: -65.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.99 ms. Allocated memory is still 180.4 MB. Free memory was 115.4 MB in the beginning and 111.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...